I purchased a large piper cub (90 inch wing span) at an estate sale. It is in excellent condition. Don't even think it's been flown. Got it with a futaba 4 channel radio for $100.00. It has a gas 2 stroke engine on it. The engine has no brand name or numbers on it at all. No idea what size it is. It runs fine but barely has enough power to get it off the ground. My question is what size gas 2 stroke engine would i need for a plane this size? Also I don't know if it has the correct prop since I have no idea what size engine it has. I was using 50:1 mix that i use for my weed eater. Any advice would be great.
Thanks
Budman